CA1195898A - Cigarettes - Google Patents
CigarettesInfo
- Publication number
- CA1195898A CA1195898A CA000408220A CA408220A CA1195898A CA 1195898 A CA1195898 A CA 1195898A CA 000408220 A CA000408220 A CA 000408220A CA 408220 A CA408220 A CA 408220A CA 1195898 A CA1195898 A CA 1195898A
- Authority
- CA
- Canada
- Prior art keywords
- cigarette
- wrapper
- rod
- cavity
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F13/00—Appliances for smoking cigars or cigarettes
- A24F13/02—Cigar or cigarette holders
- A24F13/04—Cigar or cigarette holders with arrangements for cleaning or cooling the smoke
- A24F13/06—Cigar or cigarette holders with arrangements for cleaning or cooling the smoke with smoke filters
Abstract
ABSTRACT
A cigarette having a cigarette rod enwrapped in a cigarette wrapper and a filter tip attached at one end of the rod by a tipping wrapper. The filter tip has at its periphery one or more grooves extending to the mouth end of the tip. The cigarette wrapper at the region of the rod adjacent the tip is depressed inwardly to form a cavity communicating with the groove or grooves, and the portion of the tipping wrapper over-lying the cavity permits ingress of air into the cavity. This permits air to enter the smoker's mouth through the groove or grooves and reduces or avoids problems of the smoker obturating the air inlet when holding the cigarette at the tip end.
A cigarette having a cigarette rod enwrapped in a cigarette wrapper and a filter tip attached at one end of the rod by a tipping wrapper. The filter tip has at its periphery one or more grooves extending to the mouth end of the tip. The cigarette wrapper at the region of the rod adjacent the tip is depressed inwardly to form a cavity communicating with the groove or grooves, and the portion of the tipping wrapper over-lying the cavity permits ingress of air into the cavity. This permits air to enter the smoker's mouth through the groove or grooves and reduces or avoids problems of the smoker obturating the air inlet when holding the cigarette at the tip end.
Description
This invention relates to ventilated -filter-tipped cigarettes.
It i9 known to provide ciyarettes with filters comp-rising smoke~filtration means, commonly in the form of a plug of fibrous filtration material, and ventilation-passage means extending to -the mouth end of the filter, the outer wrapper enwrapping the filter being such as to permit ingress of air into the passage means~ When a cig~rette provided with such a filter is smoked, air wholly or substantially unmixed with tobacco smoke enters the smoker's mouth from the passage means together with tobacco smoke from the filtration means. It has been found that the segrcgation of air and smoke in this manner enhances the smoking characteristics of the cigarette.
A problem for the cigarette manufacturer in ensuring that the smoker obtains the benefit derivable from a se-gregated-ventilation filter is that, in holding the cigarette at the tip end t the smoker may obturate the ventilation means provided in the outer wrapper of the filter, thus reducing or preventing the ingress of air into the passage means. It is an object of the present invention to provide a cigarette having a segregated ventilation filter wherein the incidence of this problem is eliminated or at least significantly reduced.
The present invention provides a cigarette comprising a rod of smokable material enwrapped in a cigarette wrapper ~$
and a filter tip attached at one end of said rod by means of a tipping wrapper9 said filter tip comprising smoke-filtration means and being provided at the periphery of the tip with at least one grooue extending to the mouth end of said tip, said ciyarette wrapper9 at the region of the rod adjacent the tip, being deformed inwardly to provide at least one cavity, which cavity is in communicat-ion with at least one said groove, and that portion uf said tipping wrapper overlying said cavity permitting ingress of air into said cavity.
The tipping wrapper may extend to the mouth end of the filter tip or it may have the form of a comparatively narrow tipping band.
The cavity formed by deformation of the cigarette paper may take the form of one or more grooves or it may be provided by drawing down the cross-section of the cigarette rod, suitably in uniform manner, so as to provide an annular cavity.
P~e~erably the cigarette paper is heat-deformable.
For this purpose it may comprise a~`proportion, advantageously not less than 50~0, of thermoplastic fibres or filaments.
If the ci.garette paper used is of orthodox, non-heat deformable, type1 an end zone thereof may be rendered heat~deformable by for example the application at said zone of a suitable matarial. Thus, for example, there may be applied over the zone an additional wrapper of heat deformable material. Alternatively the end zone of the S89~
cigarette paper may be coated or impregnated with a material rendering the ~one heat-deformable4 The cigarette paper may be heat deformable in the sense that by the application of heat thereto the cavity may be obtained by thermally setting the ci~rette paper in the requisite conformation~ Alternatively it may be heat deformable in the sense of having the property oF shrinkin~ when subjected to a sufficient degree of heating.
It is also conceivable to set a required deformation in the cigarette paper by the application thereto of an impregnant in a volatile vehicle.
In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way`of example, to the accompanying diagrammatic drawingsl in which -Figure 1 shows a double-length filter~tipped cigarette, partly in axial cross section;
Figure 2 shows a cross-sectional viaw taken at A-A
oF Figure l;
Figure 3 shows a differently ~ormed, single filter tipped cigarette, with the cigarette rod thereof in axial - section and the filter portion depicted with the tipping wrapper partly removed 7 Figures 4 and 5 show respective cross-sectional views taken at B-B and C-C of Figure 3;
Figure 6 shows, to a somewhat larger scale, part of a filter-tipped cigarette, with the cigarette rod thereof 8~1 in axial section and the filter portion depicted with the tipping wrapper partly removed;
Figures 7 and 8 show respective cross-sectional views taken at D~D and E-i- of Figure 6; and Figure 9 is a view similar to that of Figure 6 of a different form of cigarette.
The double cigarette of Figures 1 and 2 comprises a double unit length filter plug 1, first and second cigarette rods 2 and 3, and a paper tipping wrapper 4 serving to interattach the plug 1 and the cigarette rods 2, 3. Each of the cigarette rods 2, 3 comprises a filler of smokable material (that nf the rod 2 being designated by referenc2 numeral 5) enwrapped in a heat deformable, low air-permeability paper wrapper 6, 7 formed of an 80:20 by weight mixture of polyethylenz and cellulose fibres~
Prior to their assembly with the filter plug 1, the cigarette rods 2, 3, at the ends thereof intended to abut the plug 1, are provided with annular half-grooves.
Reference numeral 8 designates the annular half-groove 2û formed at the end of rod 2~ The peripi-eral conformation of the cigarette rods 2, 3 is modified to provide the annular half-grooves at the respective ends ihereof by moving the rods 2, 3 in contact with heated forming means of appropriate shape whilst moving the rods in a direction transverse to their axes. In United Kingdom Patent Specification No. 1,507,765 there is described an apparatus suitable for shaping rods of smoke~filtering material. The 5~
apparatus comprises a dru~-shaped inner roto~ for sùpport-ing and conueying the rod~ and a heatable arcuate outer stator past whi~h the .rods may be carried by the rotor in a direction perperldicular to tneir a~es ~hile simultaneously being ca~lsed to rotate about ~heir axes, An apparatus constructed and operable according to the same principle could be employed for rorming the annular half-grooves at the inner ends of the cigarette rods 2~ 3, Conveniently a full annular grooue is formed at the mid point of a double length cigarette rod, which is then severed centrally of the grooue to pro~ide the rods 7 ~ 3.
Prior to its ha~ing been assembled with the ciyarette rods 2; 3, the filter pluq 1~ which is formed of cellulose acetate and has a selF-bonded construction, is subjected to a for~ing procPss resulting in the provision of four e~ui-angularly spaced grooves 9 extending for the full length of the plug 1, The forming process may conveniently be performed on apparatus similar to that disclosed in the patent speci.fication referred to abo~e, but having heatable 2û stator means e~tending parallel to'the axis of the rotor.
At the time that the filter plug 1 is subjected to the formi.ng process it may constitute a portion oF a rod the length of which is equivalent to a multiple of a double unit length plug, the rod being subsequently cut into the constituent double unit length plugs~
After the tipping wrapper 4 has been applied to the three element assembly of plug 1 and rods 2, 3, it is ~s~
~6-provided with two encircling rows of ventilation holes, one of which ~ows is designat~d by reference numeral 10 in register respectively with the annular halF-groove 8 of the cigarette rod 2 and the corresponding groove at the inner end of the cigarette rod 3, The double length cigarette is then seuered at the plane I-I to provide two completed individual cigarettes~ When these cigarettes are smoked, ventilation air is drawn in through the ventilation holes into the annular half-groove and then passes along the filter plug grooves to the smoker's mouth, whereas the smoke From the ci.garette rod passes through the interior of the filter plug.
As an alternative to a filter plug of self-bonded constructionJ a filter plug comprising a heat deformable plugwrap oould be used in the double lenqth cigarette of Figure 1~ Wrapped smoke-filter rods suitabla for Forming filter plugs similar to the filter plug 1 of Figure 1 are disclQsed in United Kingdom Patent Specifica~ons Nos.
~, bsG, ~41A and 2,058,543A.
The cigare'cte diagrammatically depicted in Figures 3-5 comprises a cigarette rod 11, constituted by a filler 12 of smol<able material enwrappad in a heat deformable paper wrapper 13 -Formed substantially wholly of polyethylene, and a filter plugl4, of self-bonded cellulose acetate fibre~, secured to the rod 11 by means of a paper tipping wrapper 15. Before the rod 11 is assembled with the filter plug 14, three equi angularly spaced grooves 16 are formed ~5~
in the wrapper 13 by rolling the rod 11 in contact with a suitably shaped heated former means. As may be seen from Figure 3~ the grooves 16 extend longitudinally of the cigarette rod 11 from the end of the rod abutting the filter plug 14.
The filter plug 14 is provided, before assembly with the rod 1.1.~ with three equi-angularly spaced peripheral grooves 17 which extend from the mouth end of the plug 14 to an annular half-groove 18 formed at the opposite end of the plug 14.
After the paper tipping wrapper 15 has been applied to the juutaposed filter plug 14 and cigarette rod 11, i.t is provided with a row of ventilation holes 19 overlying the grooves 16 formed in the cigarette rod 11, the arrangement being such that at least one hole communicates with each of the grooves 16, l~hen a cigarette as depicted in Figure 3 is smoked, ventilation air flows into the grooves 16 through the ventilation holes 19. The vent~
ilation air flows frorn the grooves 16 via the annular groove 18 of the plug 14, to the gæoove 17 thereof and from there to the smoker's mouth.
The cigarette of Figures 6-8 comprises a cigarette rod 20, constituted by a filler 21 of smokable material enwrapped in a cigarette wrapper 22 of conventional cigar~tte paperl and a filter plug 23, of self~bonded cellulose acetate fibres, secured -to the rod 20 by means of a tipping wrapper 24~
~9~;~9~
The filter plug 23 is provided, at the end thereof abutting the cigarette rod ~0, with an annular half-groove 25 and, at diametrically opposed locations, with grooves 26 which extend fro~ the halF-groove 25 to the mouth end of the plug 23.
Before being assembled with the filter plug 237 the cigarette rod 20 for~s one half of a double length cigar-ette rod of plain cylindrical form. There i5 wrapped about a central zone of the double length cigarette rod a heat deformable wrapper one half of which appears in Figures 6 and 7 designated 27. The double length cigarette is then subjected to a hot forming process to provide, within the bounds of the central zone, two grooves 28 disposed at diametrically opposed locations, after which the double length rod is severed to provide two individual cigarette rods.
As will be appreciated, the provision of the heat deformable wrapper renders the rod heat deformable at the wrapped zone. Various thermoplastic materials may be used to provide the wrapper, A su,itable such material is polyethylene.
The tipping wrapper 24 is provided with an encircling row of ventilation holes 29, at least one of which commun-icates with each of the grooves 2~.
In the cigarette of Figure 9 the filter plug 30 is provided with four equi-angularly spaced grooves 31, which grooves extend from end-to-end of the plug 30. Instead 935~3~1!3 _9_ of providing grooves in the surface of the cigarette rod 32~ an approximately frusto-conical form i8 imparted to the end of the rod adjacent the plug 30. As in the case of tbe cigarette of Figure 6, conventional eigarette papar 33 of the rod 32 is rendered heat cieformable by the presence of an additional wrapper 34 of thermoplastic material. There is thus provided an ann~llar cavity 35 in communication with the grooves 31 of -the filter plug 30.
Tipping 36 is provided with an encircling row of ventilation hcles 37 in register with the cavity 35.
As an alternative to the additional wrapper 34 being of a thermoplastic nature, it may instead be of a heat-shrink material. The wrapper is applied -to a double length cigarette rod and is then heated to cause it to shrink and thus to produce a waisted effect in the double rod, which i8 then severed at the mid plane to provide individual rods as per rod 32. A cigarette rod comprising a heat-shrink wrapper is disclosed ln U.K. Patent Specific ation No. 1,378,145, but the wrapper is not pre-shrunk in that case.
It i9 known to provide ciyarettes with filters comp-rising smoke~filtration means, commonly in the form of a plug of fibrous filtration material, and ventilation-passage means extending to -the mouth end of the filter, the outer wrapper enwrapping the filter being such as to permit ingress of air into the passage means~ When a cig~rette provided with such a filter is smoked, air wholly or substantially unmixed with tobacco smoke enters the smoker's mouth from the passage means together with tobacco smoke from the filtration means. It has been found that the segrcgation of air and smoke in this manner enhances the smoking characteristics of the cigarette.
A problem for the cigarette manufacturer in ensuring that the smoker obtains the benefit derivable from a se-gregated-ventilation filter is that, in holding the cigarette at the tip end t the smoker may obturate the ventilation means provided in the outer wrapper of the filter, thus reducing or preventing the ingress of air into the passage means. It is an object of the present invention to provide a cigarette having a segregated ventilation filter wherein the incidence of this problem is eliminated or at least significantly reduced.
The present invention provides a cigarette comprising a rod of smokable material enwrapped in a cigarette wrapper ~$
and a filter tip attached at one end of said rod by means of a tipping wrapper9 said filter tip comprising smoke-filtration means and being provided at the periphery of the tip with at least one grooue extending to the mouth end of said tip, said ciyarette wrapper9 at the region of the rod adjacent the tip, being deformed inwardly to provide at least one cavity, which cavity is in communicat-ion with at least one said groove, and that portion uf said tipping wrapper overlying said cavity permitting ingress of air into said cavity.
The tipping wrapper may extend to the mouth end of the filter tip or it may have the form of a comparatively narrow tipping band.
The cavity formed by deformation of the cigarette paper may take the form of one or more grooves or it may be provided by drawing down the cross-section of the cigarette rod, suitably in uniform manner, so as to provide an annular cavity.
P~e~erably the cigarette paper is heat-deformable.
For this purpose it may comprise a~`proportion, advantageously not less than 50~0, of thermoplastic fibres or filaments.
If the ci.garette paper used is of orthodox, non-heat deformable, type1 an end zone thereof may be rendered heat~deformable by for example the application at said zone of a suitable matarial. Thus, for example, there may be applied over the zone an additional wrapper of heat deformable material. Alternatively the end zone of the S89~
cigarette paper may be coated or impregnated with a material rendering the ~one heat-deformable4 The cigarette paper may be heat deformable in the sense that by the application of heat thereto the cavity may be obtained by thermally setting the ci~rette paper in the requisite conformation~ Alternatively it may be heat deformable in the sense of having the property oF shrinkin~ when subjected to a sufficient degree of heating.
It is also conceivable to set a required deformation in the cigarette paper by the application thereto of an impregnant in a volatile vehicle.
In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way`of example, to the accompanying diagrammatic drawingsl in which -Figure 1 shows a double-length filter~tipped cigarette, partly in axial cross section;
Figure 2 shows a cross-sectional viaw taken at A-A
oF Figure l;
Figure 3 shows a differently ~ormed, single filter tipped cigarette, with the cigarette rod thereof in axial - section and the filter portion depicted with the tipping wrapper partly removed 7 Figures 4 and 5 show respective cross-sectional views taken at B-B and C-C of Figure 3;
Figure 6 shows, to a somewhat larger scale, part of a filter-tipped cigarette, with the cigarette rod thereof 8~1 in axial section and the filter portion depicted with the tipping wrapper partly removed;
Figures 7 and 8 show respective cross-sectional views taken at D~D and E-i- of Figure 6; and Figure 9 is a view similar to that of Figure 6 of a different form of cigarette.
The double cigarette of Figures 1 and 2 comprises a double unit length filter plug 1, first and second cigarette rods 2 and 3, and a paper tipping wrapper 4 serving to interattach the plug 1 and the cigarette rods 2, 3. Each of the cigarette rods 2, 3 comprises a filler of smokable material (that nf the rod 2 being designated by referenc2 numeral 5) enwrapped in a heat deformable, low air-permeability paper wrapper 6, 7 formed of an 80:20 by weight mixture of polyethylenz and cellulose fibres~
Prior to their assembly with the filter plug 1, the cigarette rods 2, 3, at the ends thereof intended to abut the plug 1, are provided with annular half-grooves.
Reference numeral 8 designates the annular half-groove 2û formed at the end of rod 2~ The peripi-eral conformation of the cigarette rods 2, 3 is modified to provide the annular half-grooves at the respective ends ihereof by moving the rods 2, 3 in contact with heated forming means of appropriate shape whilst moving the rods in a direction transverse to their axes. In United Kingdom Patent Specification No. 1,507,765 there is described an apparatus suitable for shaping rods of smoke~filtering material. The 5~
apparatus comprises a dru~-shaped inner roto~ for sùpport-ing and conueying the rod~ and a heatable arcuate outer stator past whi~h the .rods may be carried by the rotor in a direction perperldicular to tneir a~es ~hile simultaneously being ca~lsed to rotate about ~heir axes, An apparatus constructed and operable according to the same principle could be employed for rorming the annular half-grooves at the inner ends of the cigarette rods 2~ 3, Conveniently a full annular grooue is formed at the mid point of a double length cigarette rod, which is then severed centrally of the grooue to pro~ide the rods 7 ~ 3.
Prior to its ha~ing been assembled with the ciyarette rods 2; 3, the filter pluq 1~ which is formed of cellulose acetate and has a selF-bonded construction, is subjected to a for~ing procPss resulting in the provision of four e~ui-angularly spaced grooves 9 extending for the full length of the plug 1, The forming process may conveniently be performed on apparatus similar to that disclosed in the patent speci.fication referred to abo~e, but having heatable 2û stator means e~tending parallel to'the axis of the rotor.
At the time that the filter plug 1 is subjected to the formi.ng process it may constitute a portion oF a rod the length of which is equivalent to a multiple of a double unit length plug, the rod being subsequently cut into the constituent double unit length plugs~
After the tipping wrapper 4 has been applied to the three element assembly of plug 1 and rods 2, 3, it is ~s~
~6-provided with two encircling rows of ventilation holes, one of which ~ows is designat~d by reference numeral 10 in register respectively with the annular halF-groove 8 of the cigarette rod 2 and the corresponding groove at the inner end of the cigarette rod 3, The double length cigarette is then seuered at the plane I-I to provide two completed individual cigarettes~ When these cigarettes are smoked, ventilation air is drawn in through the ventilation holes into the annular half-groove and then passes along the filter plug grooves to the smoker's mouth, whereas the smoke From the ci.garette rod passes through the interior of the filter plug.
As an alternative to a filter plug of self-bonded constructionJ a filter plug comprising a heat deformable plugwrap oould be used in the double lenqth cigarette of Figure 1~ Wrapped smoke-filter rods suitabla for Forming filter plugs similar to the filter plug 1 of Figure 1 are disclQsed in United Kingdom Patent Specifica~ons Nos.
~, bsG, ~41A and 2,058,543A.
The cigare'cte diagrammatically depicted in Figures 3-5 comprises a cigarette rod 11, constituted by a filler 12 of smol<able material enwrappad in a heat deformable paper wrapper 13 -Formed substantially wholly of polyethylene, and a filter plugl4, of self-bonded cellulose acetate fibre~, secured to the rod 11 by means of a paper tipping wrapper 15. Before the rod 11 is assembled with the filter plug 14, three equi angularly spaced grooves 16 are formed ~5~
in the wrapper 13 by rolling the rod 11 in contact with a suitably shaped heated former means. As may be seen from Figure 3~ the grooves 16 extend longitudinally of the cigarette rod 11 from the end of the rod abutting the filter plug 14.
The filter plug 14 is provided, before assembly with the rod 1.1.~ with three equi-angularly spaced peripheral grooves 17 which extend from the mouth end of the plug 14 to an annular half-groove 18 formed at the opposite end of the plug 14.
After the paper tipping wrapper 15 has been applied to the juutaposed filter plug 14 and cigarette rod 11, i.t is provided with a row of ventilation holes 19 overlying the grooves 16 formed in the cigarette rod 11, the arrangement being such that at least one hole communicates with each of the grooves 16, l~hen a cigarette as depicted in Figure 3 is smoked, ventilation air flows into the grooves 16 through the ventilation holes 19. The vent~
ilation air flows frorn the grooves 16 via the annular groove 18 of the plug 14, to the gæoove 17 thereof and from there to the smoker's mouth.
The cigarette of Figures 6-8 comprises a cigarette rod 20, constituted by a filler 21 of smokable material enwrapped in a cigarette wrapper 22 of conventional cigar~tte paperl and a filter plug 23, of self~bonded cellulose acetate fibres, secured -to the rod 20 by means of a tipping wrapper 24~
~9~;~9~
The filter plug 23 is provided, at the end thereof abutting the cigarette rod ~0, with an annular half-groove 25 and, at diametrically opposed locations, with grooves 26 which extend fro~ the halF-groove 25 to the mouth end of the plug 23.
Before being assembled with the filter plug 237 the cigarette rod 20 for~s one half of a double length cigar-ette rod of plain cylindrical form. There i5 wrapped about a central zone of the double length cigarette rod a heat deformable wrapper one half of which appears in Figures 6 and 7 designated 27. The double length cigarette is then subjected to a hot forming process to provide, within the bounds of the central zone, two grooves 28 disposed at diametrically opposed locations, after which the double length rod is severed to provide two individual cigarette rods.
As will be appreciated, the provision of the heat deformable wrapper renders the rod heat deformable at the wrapped zone. Various thermoplastic materials may be used to provide the wrapper, A su,itable such material is polyethylene.
The tipping wrapper 24 is provided with an encircling row of ventilation holes 29, at least one of which commun-icates with each of the grooves 2~.
In the cigarette of Figure 9 the filter plug 30 is provided with four equi-angularly spaced grooves 31, which grooves extend from end-to-end of the plug 30. Instead 935~3~1!3 _9_ of providing grooves in the surface of the cigarette rod 32~ an approximately frusto-conical form i8 imparted to the end of the rod adjacent the plug 30. As in the case of tbe cigarette of Figure 6, conventional eigarette papar 33 of the rod 32 is rendered heat cieformable by the presence of an additional wrapper 34 of thermoplastic material. There is thus provided an ann~llar cavity 35 in communication with the grooves 31 of -the filter plug 30.
Tipping 36 is provided with an encircling row of ventilation hcles 37 in register with the cavity 35.
As an alternative to the additional wrapper 34 being of a thermoplastic nature, it may instead be of a heat-shrink material. The wrapper is applied -to a double length cigarette rod and is then heated to cause it to shrink and thus to produce a waisted effect in the double rod, which i8 then severed at the mid plane to provide individual rods as per rod 32. A cigarette rod comprising a heat-shrink wrapper is disclosed ln U.K. Patent Specific ation No. 1,378,145, but the wrapper is not pre-shrunk in that case.
Claims (8)
1. A cigarette comprising a cigarette rod of smokable material enwrapped in a cigarette wrapper and a filter tip attached at one end of said rod by means of a tipping wrapper, said filter tip comprising smoke-filtration means and being provided at the periphery of the tip with at least one groove extending to the mouth end of said tip, said cigarette wrapper, at the region of the said rod adjacent the tip, being depressed inwardly to provide at least one cavity which is in communication with at least one said groove, and that portion of said tipping wrapper overlying said cavity permitting ingress of air into the same.
2. A cigarette according to claim 1, wherein the tipping wrapper extends to the mouth end of the filter tip,
3. A cigarette according to claim 1 or 2, wherein the said cavity comprises at least one annular groove in the said cigarette rod.
4. A cigarette according to claim 1, wherein the said cavity is formed by a drawing down of the cross section of the cigarette rod to provide an annular cavity.
5. A cigarette according to claim 1, wherein the cigar-ette wrapper is of heat-deformable paper.
6. A cigarette according to claim 5, wherein the cigar-ette wrapper comprises a proportion of thermoplastic fibres or filaments.
7. A cigarette according to claim 1, wherein the cross section of the cigarette rod is drawn down to provide the said cavity by means of an additional wrapper of heat-deformable material.
8. A cigarette according to claim 4, wherein the cross section of the cigarette rod is drawn down to provide the said cavity by means of an additional wrapper of heat-shrink material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8123698 | 1981-08-03 | ||
| GB81.23698 | 1981-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1195898A true CA1195898A (en) | 1985-10-29 |
Family
ID=10523664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000408220A Expired CA1195898A (en) | 1981-08-03 | 1982-07-28 | Cigarettes |
Country Status (35)
| Country | Link |
|---|---|
| US (1) | US4474192A (en) |
| JP (1) | JPS5933350B2 (en) |
| KR (1) | KR840000888A (en) |
| AR (1) | AR227366A1 (en) |
| AT (1) | AT381009B (en) |
| AU (1) | AU541919B2 (en) |
| BE (1) | BE893993A (en) |
| BR (1) | BR8204528A (en) |
| CA (1) | CA1195898A (en) |
| CH (1) | CH646845A5 (en) |
| DE (2) | DE8221978U1 (en) |
| DK (1) | DK344682A (en) |
| ES (1) | ES276117Y (en) |
| FI (1) | FI71470C (en) |
| FR (1) | FR2510360B1 (en) |
| GB (1) | GB2104767B (en) |
| HK (1) | HK54385A (en) |
| HU (1) | HU186552B (en) |
| IL (1) | IL66401A (en) |
| IN (1) | IN156472B (en) |
| IT (1) | IT1153162B (en) |
| KE (1) | KE3532A (en) |
| LU (1) | LU84310A1 (en) |
| MX (1) | MX154087A (en) |
| MY (1) | MY8600152A (en) |
| NL (1) | NL8203052A (en) |
| NO (1) | NO154112C (en) |
| NZ (1) | NZ201455A (en) |
| PH (1) | PH19840A (en) |
| PL (1) | PL130001B1 (en) |
| RO (1) | RO88239B (en) |
| SE (1) | SE452245B (en) |
| YU (1) | YU169282A (en) |
| ZA (1) | ZA825394B (en) |
| ZW (1) | ZW15882A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO154781C (en) * | 1981-08-03 | 1986-12-29 | British American Tobacco Co | CIGARETTE AND PROCEDURE FOR ITS MANUFACTURING. |
| GB2146702B (en) * | 1983-09-14 | 1987-12-23 | Rolls Royce | Exhaust mixer for turbofan aeroengine |
| DE3400004A1 (en) * | 1984-01-02 | 1985-07-18 | B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg | VENTILATION ELEMENT FOR A SMOKABLE ARTICLE |
| GB8407671D0 (en) * | 1984-03-23 | 1984-05-02 | Brritish American Tobacco Co L | Smoking article mouth-piece elements |
| GB8518385D0 (en) * | 1985-07-20 | 1985-08-29 | British American Tobacco Co | Tobacco smoke filters |
| US4867182A (en) * | 1988-03-16 | 1989-09-19 | R. J. Reynolds Tobacco Company | Temperature/humidity controlled valve for a smoking article |
| DE4107024C2 (en) * | 1991-03-01 | 1993-12-23 | Reemtsma H F & Ph | System for self-production of filter cigarettes |
| DE10119820A1 (en) * | 2001-04-23 | 2002-10-24 | Hauni Maschinenbau Ag | Cigarette filter consists of different types of filter material enclosed by transparent jacketing material and outer paper cover |
| AU2013204693A1 (en) * | 2013-03-27 | 2014-10-16 | Duggan, Kerry Grant MR | Cigarettes and their construction |
| CN103431518B (en) * | 2013-09-05 | 2015-07-08 | 上海华宝生物科技有限公司 | One-step injection-molded smoke filter |
| CN106235405B (en) * | 2016-08-31 | 2023-06-09 | 云南中烟工业有限责任公司 | Cigarette filter tip with adjustable suction resistance distribution |
| WO2018230002A1 (en) * | 2017-06-16 | 2018-12-20 | 株式会社 東亜産業 | Method for manufacturing filler for electronic cigarette cartridge in which non-tobacco plant is used, and filler for electronic cigarette cartridge in which non-tobacco plant is used |
| US11013267B2 (en) * | 2017-09-22 | 2021-05-25 | Altria Client Services Llc | Non-combustible tobacco vaping insert, and a cartridge containing the non-combustible tobacco vaping insert |
| EP3772251B1 (en) * | 2018-04-09 | 2022-09-14 | Philip Morris Products S.A. | Aerosol-generating article having wrapper with heat control element |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1718122A (en) * | 1927-01-18 | 1929-06-18 | Shon Clarence L De | Cigarette tip |
| DE1750362U (en) * | 1954-11-26 | 1957-08-08 | Klaus-Heinrich Mueller | CIGARETTE. |
| US3324862A (en) * | 1964-08-31 | 1967-06-13 | Simone Bessie De | Smoking device |
| US3490461A (en) * | 1967-04-20 | 1970-01-20 | Philip Morris Inc | Cigarette ventilation |
| GB1508084A (en) * | 1976-03-17 | 1978-04-19 | British American Tobacco Co | Tobacco-smoke filters |
| US4256122A (en) * | 1979-04-11 | 1981-03-17 | Brown & Williamson Tobacco Corporation | Cigarette filter |
| CA1156533A (en) * | 1980-05-01 | 1983-11-08 | Henry G. Horsewell | Smoking articles |
-
1982
- 1982-07-26 IL IL66401A patent/IL66401A/en unknown
- 1982-07-27 ZA ZA825394A patent/ZA825394B/en unknown
- 1982-07-28 GB GB08221800A patent/GB2104767B/en not_active Expired
- 1982-07-28 CA CA000408220A patent/CA1195898A/en not_active Expired
- 1982-07-29 FI FI822651A patent/FI71470C/en not_active IP Right Cessation
- 1982-07-29 AU AU86561/82A patent/AU541919B2/en not_active Ceased
- 1982-07-30 NO NO822619A patent/NO154112C/en unknown
- 1982-07-30 ZW ZW158/82A patent/ZW15882A1/en unknown
- 1982-07-30 BE BE0/208722A patent/BE893993A/en not_active IP Right Cessation
- 1982-07-30 NL NL8203052A patent/NL8203052A/en not_active Application Discontinuation
- 1982-07-30 SE SE8204521A patent/SE452245B/en not_active IP Right Cessation
- 1982-08-02 ES ES1982276117U patent/ES276117Y/en not_active Expired
- 1982-08-02 DK DK344682A patent/DK344682A/en not_active Application Discontinuation
- 1982-08-02 LU LU84310A patent/LU84310A1/en unknown
- 1982-08-02 NZ NZ201455A patent/NZ201455A/en unknown
- 1982-08-02 US US06/404,067 patent/US4474192A/en not_active Expired - Lifetime
- 1982-08-02 IT IT22700/82A patent/IT1153162B/en active
- 1982-08-02 RO RO108350A patent/RO88239B/en unknown
- 1982-08-02 CH CH465582A patent/CH646845A5/en not_active IP Right Cessation
- 1982-08-02 BR BR8204528A patent/BR8204528A/en unknown
- 1982-08-02 HU HU822484A patent/HU186552B/en unknown
- 1982-08-02 KR KR1019820003450A patent/KR840000888A/en unknown
- 1982-08-03 DE DE8221978U patent/DE8221978U1/de not_active Expired
- 1982-08-03 JP JP57136186A patent/JPS5933350B2/en not_active Expired
- 1982-08-03 AR AR290204A patent/AR227366A1/en active
- 1982-08-03 IN IN907/CAL/82A patent/IN156472B/en unknown
- 1982-08-03 PL PL1982237751A patent/PL130001B1/en unknown
- 1982-08-03 PH PH27669A patent/PH19840A/en unknown
- 1982-08-03 FR FR8213529A patent/FR2510360B1/en not_active Expired
- 1982-08-03 DE DE3228948A patent/DE3228948C2/en not_active Expired
- 1982-08-03 AT AT0299082A patent/AT381009B/en not_active IP Right Cessation
- 1982-08-03 MX MX193867A patent/MX154087A/en unknown
- 1982-08-03 YU YU01692/82A patent/YU169282A/en unknown
-
1985
- 1985-05-21 KE KE3532A patent/KE3532A/en unknown
- 1985-07-18 HK HK543/85A patent/HK54385A/en unknown
-
1986
- 1986-12-30 MY MY152/86A patent/MY8600152A/en unknown
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1195898A (en) | Cigarettes | |
| US4962773A (en) | Process for the manufacture tobacco rods containing expanded tobacco material | |
| US7987856B2 (en) | Smoking article with bypass channel | |
| JPS5832955B2 (en) | cigarette filter | |
| EP0099225A1 (en) | Tobacco smoke filter and process to produce same | |
| EP2378903B1 (en) | Filter cigarillo | |
| EP2352398B1 (en) | Filter for a smoking article | |
| US3752165A (en) | Smoke filter plug and process and cigarette made therefrom | |
| US20190098928A1 (en) | Smoking article filter | |
| GB2119221A (en) | Cigarette filter | |
| RU148462U1 (en) | FILTER FOR SMOKING | |
| KR100390358B1 (en) | Filter for a cigarette and filter cigarette | |
| EP1528868B1 (en) | Biodegradable dual density filter cigarette | |
| RU2333712C2 (en) | Cigarette filter | |
| KR102470573B1 (en) | Filter units for smoking articles | |
| KR20200044914A (en) | Filter unit for smoking articles | |
| CA1200732A (en) | Smoking article filters | |
| US4481954A (en) | Cigarettes | |
| US4723561A (en) | Smoking articles | |
| US20220218019A1 (en) | Cigarillo | |
| US4718437A (en) | Smoking articles | |
| GB2133269A (en) | Tobacco smoke filter | |
| DK172979B1 (en) | Coaxial cigarette | |
| NZ203131A (en) | Cigarette filter:peripheral ducts and wrapper apertures | |
| GB2130468A (en) | Improvements in or relating to tobacco smoke filters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |